Assuming you have the LED between the pin and GND, the "200" represents a fraction of roughly 200/255 of full brightness.
In practice, you won't notice any difference between "200" and "255"
Assuming you have the LED between the pin and GND, the "200" represents a fraction of roughly 200/255 of full brightness.
In practice, you won't notice any difference between "200" and "255"